52 lines
2.1 KiB
Rust
52 lines
2.1 KiB
Rust
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// Rust Bitcoin Library
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// Written in 2014 by
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// Andrew Poelstra <apoelstra@wpsoftware.net>
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//
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// To the extent possible under law, the author(s) have dedicated all
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// copyright and related and neighboring rights to this software to
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// the public domain worldwide. This software is distributed without
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// any warranty.
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//
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// You should have received a copy of the CC0 Public Domain Dedication
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// along with this software.
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// If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
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//
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//! File defines types for hashes used throughout the library. These types are needed in order
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//! to avoid mixing data of the same hash format (like SHA256d) but of different meaning
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//! (transaction id, block hash etc).
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use std::io;
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use consensus::encode::{Encodable, Decodable, Error};
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use hashes::{sha256, sha256d, hash160, Hash};
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use hashes::hex::{ToHex, FromHex};
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macro_rules! impl_hashencode {
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($hashtype:ident) => {
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impl Encodable for $hashtype {
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fn consensus_encode<S: io::Write>(&self, s: S) -> Result<usize, Error> {
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self.0.consensus_encode(s)
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}
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}
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impl Decodable for $hashtype {
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fn consensus_decode<D: io::Read>(d: D) -> Result<Self, Error> {
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let inner = <<$hashtype as Hash>::Inner>::consensus_decode(d)?;
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Ok(Self::from_slice(&inner).unwrap())
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}
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}
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}
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}
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hash_newtype!(Txid, sha256d::Hash, 32, doc="A bitcoin transaction hash/transaction ID.");
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hash_newtype!(Wtxid, sha256d::Hash, 32, doc="A bitcoin witness transaction ID.");
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hash_newtype!(BlockHash, sha256d::Hash, 32, doc="A bitcoin block hash.");
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hash_newtype!(PubkeyHash, hash160::Hash, 20, doc="A hash of a public key.");
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hash_newtype!(ScriptHash, hash160::Hash, 20, doc="A hash of Bitcoin Script bytecode.");
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hash_newtype!(WPubkeyHash, hash160::Hash, 20, doc="SegWit version of a public key hash.");
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hash_newtype!(WScriptHash, sha256::Hash, 32, doc="SegWit version of a Bitcoin Script bytecode hash.");
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hash_newtype!(XpubIdentifier, hash160::Hash, 20, doc="XpubIdentifier as defined in BIP-32.");
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impl_hashencode!(Txid);
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